The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 25, 2026
Filed:
Sep. 08, 2022
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Electronic Devices & Storage Corporation, Tokyo, JP;
Shoko Hanagata, Komatsu Ishikawa, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Toshiba Electronic Devices & Storage Corporation, Kawasaki, JP;
Abstract
A semiconductor device includes first to second electrodes, and first to fifth semiconductor regions. The second semiconductor region is located on the first semiconductor region and is of the first conductivity type. The third semiconductor region is located on a portion of the second semiconductor region and is of the first conductivity type. The third semiconductor region has a higher first-conductivity-type impurity concentration than the second semiconductor region. The fourth semiconductor region is located on the second and third semiconductor regions and is of a second conductivity type. The fifth semiconductor region is located on a portion of the fourth semiconductor region and is of the second conductivity type. The fifth semiconductor region has a higher second-conductivity-type impurity concentration than the fourth semiconductor region. At least a portion of the fifth semiconductor region is positioned above at least a portion of the third semiconductor region.